<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Math</title>
</head>
<body>
<script>
    document.write(Math.random()+"<br>");
    document.write(Math.ceil(Math.PI)+"<br>");
    document.write(Math.floor(Math.PI)+"<br>");
    document.write(Math.abs(Math.PI)+"<br>");




</script>



</body>
</html>